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By About Day Seven of Pregnancy, Which of the Following

Question 16

Multiple Choice

By about day seven of pregnancy, which of the following occurs?


A) The entire fetus is covered by hair, which will dissipate at about 12 weeks.
B) The heart, ears, lungs, and kidneys begin to develop.
C) The neural tube, arms, legs, and undifferentiated sex organs form.
D) The blastocyst travels down the fallopian tube and attaches to the uterine wall.

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